ST-800/900
Maintenance manual
7
showing EA3
3. dial sensor plug wire poor
contact
Repair dial sensor plug wire
4. Dial sensor operating circuit
faulty
Check and repair dial sensor operating circuit or replace
main board (see diagram 6)
self checking
after
open
showing EA4
1. to much dust in the feeding
sensor
Cleaning the dust with brush
2. Worn notes or sundries block
feeding sensor
take away worn notes or sundries
3. feeding sensor damage
Replace feeding sensor (see diagram 1)
10
、
Counting failure and solution
Fault Phenomenon
Fault reason
Solution
After put the money on
hopper, both feeding
wheel
and
stacker
wheel don’t rotate
feeding sensor damage
replace feeding sensor
motor dont rotate or feeding sensor
circuit fault
Repair feeding sensor control circuit or
replace main board (see diagram 4)
After put the money on
hopper, feeding wheel
rotate, stacker wheel
don’t rotate
small motor plug wire poor contact
repair small motor plug wire
small motor damage
replace small motor
small motor control circuit fault
check and repair small motor control circuit
or replace main board (see diagram 7)
After put the money on
hopper, feeding wheel
don’t
rotate,
stacker
wheel rotate
main motor plug wire with poor
contact
repair main motor plug wire
main motor damage
replace main motor
main motor control circuit fault
check and repair main motor control circuit
or replace main board (see diagram 7)
Don’t
calculate
the
notes quantity
left, right counting tube damage
replace left, right counting tube
dial sensor damage
replace dial sensor
Counting
money
unfavorable
feeding strength too large
clockwise adjust feeding screw, to decrease
feeding strength
feeding strength too small
anti-clockwise adjust feeding screw, to
increase feeding strength
11
、
Maintenance flow chart
11.1
、
Chart 1: Judge the counting tube is good or not without power on
：
11.1.1
、
Emitting tube: pull out the connecting line of the emitting tube, then measure the emitting tube by the use
of the digital multimeter with diode grade
；